Would keep it simple and stick to researching a few options rather than overload your head off the bat. Despite being able to get suggestions here it's always helpful/advised that people do some in-depth research as well, before plunging in on a buy (reading the impressions/appreciation thread, etc).
TBH I mostly listen to ballads and K-indie/oldies in terms of Korean music. But for modern stuff either the Ortos or the TDKs would be very much sufferable.
yep thats why i tried to make it as few as possible.
maybe i should research deeper as well. and btw thanks for your recommend, really appreciate that :D
i guess i should auditioned more IEM, and make maximum 5 choices before decide to buy.